A↓26 B↓25 C↓24 D↓23 E↓22 F↓21 G↓20 H↓19 I↓18 J↓17 K↓16 L↓15 M↓14 N↓13 O↓12 P↓11 Q↓10 R↓9 S↓8 T↓7 U↓6 V↓5 W↓4 X↓3 Y↓2 Z↓1 Note: Each alphabet is encoded to the number below it. Using the given code, "G A L A X Y" can be encoded as ____.
A(2, 20), B(x,20), C (40,y), and D(10,6) are vertices of parallelogram taken in order, find x and y.
Using elementary transformations, find the inverse of the followng matrix. [1−123]